1. (a.) Noxious; harmful; dangerous; as, a noisome odor\; hurtful; mischievous; unwholesome; insalubrious; destructive; as, noisome effluvia.

2. (a.) Offensive to the smell or other senses; disgusting; fetid.

abhorrent abominable arrant atrocious awful bad bad for bad-smelling baleful baneful barfy base beastly below contempt beneath contempt blameworthy brackish brutal cloying contaminated contemptible corroding corrosive corrupting corruptive counterproductive crude damaging deadly deleterious deplorable despicable detestable detrimental dire dirty disadvantageous disgusting disserviceable distressing dreadful egregious enormous execrable fecal fetid filthy flagrant forbidding foul frowsty frowy frowzy fulsome funky fusty gamy graveolent grievous gross harmful hateful heinous high horrible horrid hurtful icky ignoble ill-smelling infamous injurious insalubrious insanitary lamentable lethal loathsome lousy maggoty malefic malevolent malign malignant malodorous mawkish mephitic miasmal miasmic mildewed mildewy mischievous moldy monstrous morbific musty nasty nauseant nauseating nauseous nefarious nidorous notorious noxious objectionable obnoxious obscene odious odorous offensive olid ominous outrageous overripe pathogenic peccant pernicious pestiferous pitiable pitiful poisonous polluted prejudicial putrid rancid rank reasty reasy rebarbative reechy reeking reeky regrettable repellent reprehensible repugnant repulsive revolting rotten sad scandalous scatheful schlock scurvy septic shabby shameful shocking shoddy sickening sickly smellful smelling smelly sordid spoiled squalid stenchy stinking strong stuffy sulfurous tainted terrible too bad toxic unclean unhealthful unhealthy unhygienic unsanitary unwholesome venenate veneniferous venenous venomous vicious vile villainous virulent vomity weevily woeful worst worthless wretched yucky